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Optical structure and display substrate

A technology of optical structure and structural unit, applied in optics, nonlinear optics, instruments, etc., can solve problems such as unsatisfactory viewing angle and light output rate, lower cathode emissivity, low light output rate, etc.

Active Publication Date: 2016-11-02
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to increase the light field distribution range of the OLED and solve the viewing angle problem, it is not necessary to form a microcavity on the OLED. At this time, the light field distribution is large, and there is no viewing angle problem, but the emissivity of the cathode in the OLED is reduced, resulting in the light output rate of the OLED. Low
[0004] However, there are at least the following problems in the prior art: the existing OLED structure is divided into a structure with a microcavity and a structure without a microcavity, but the above two structures cannot meet the problems of viewing angle and light extraction rate.

Method used

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  • Optical structure and display substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Please refer to figure 1 , this embodiment provides an optical structure 10, including first structural units 1 and second structural units 2 arranged alternately, the refractive index of the first structural unit 1 and the refractive index of the second structural unit 2 are adjustable, so as to The refractive indices of the first structural unit 1 and the second structural unit 2 are made different.

[0025] From figure 1 It can be seen from the figure that the first structural unit 1 and the second structural unit 2 are stacked, that is to say, when the number of the second structural unit 2 and the first structural unit 1 are multiple, the " The structure of the second structural unit 2—the first structural unit 1—the second structural unit 2—the first structural unit 1…”; when the number of the second structural unit 2 and the first structural unit 1 is one, the first structure Unit 1 is located above the second structural unit 2 .

[0026] Wherein, both the fir...

Embodiment 2

[0050] Please refer to figure 2 , this embodiment provides a method for preparing an optical structure, including:

[0051] The first structural unit 1 and the second structural unit 2 are alternately formed; the refractive index of the first structural unit 1 and the refractive index of the second structural unit 2 are adjustable, so that the first structural unit 1 and the second structural unit 2 The refractive index is different.

[0052] Wherein, alternately forming the first structural unit 1 and the second structural unit 2 specifically includes:

[0053] S1, forming a second structural unit 1;

[0054] S2, forming the first structural unit 2.

[0055] Wherein, between step S1 and step S2, it also includes:

[0056] S11, forming an insulating layer 3 .

[0057] Wherein, if the number of the first structural unit 1 and the second structural unit 2 is greater than 1, the preparation method further includes:

[0058] S3. Repeat steps S1 to S2 until the number of the...

Embodiment 3

[0062] Please refer to image 3 and Figure 4 , this embodiment provides a display substrate, including a base substrate 20, a light-emitting device 30 and the optical structure 10 of Embodiment 1, the light-emitting device 30 is located on the base substrate 20, and the optical structure 10 is located on the light-emitting side of the light-emitting device 30, Wherein, the light emitted from the light emitting side of the light emitting device 30 enters the optical structure 10 through the second structural unit 2 , and the refractive index of the second structural unit 2 is greater than that of the first structural unit 1 .

[0063] Wherein, the light-emitting device 30 includes conventional structures such as an array layer 35, an anode 31, an organic layer 32, a cathode 33, and an encapsulation layer 34 arranged in sequence. In this embodiment, the cathode 33 is a transparent electrode, and the anode 31 is a non-transparent electrode. It can be understood that the light e...

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Abstract

The invention provides an optical structure and a display substrate, belongs to the field of display technology, and solves the problems that a conventional OLED structure cannot meet the demands on both visual angle and light extraction rate. The optical structure comprises a first structural unit and a second structural unit which are alternately arranged, wherein the refractive indexes of both the first structural unit and the second structural unit are adjustable, so that the refractive indexes of the first structural unit and the second structural unit can be different.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an optical structure and a display substrate. Background technique [0002] Organic Light-Emitting Diode (OLED), as a current-mode light-emitting device, has been increasingly used in high-performance displays. The light extraction efficiency of ordinary organic light emitting diode devices is only about 20%. In order to improve the light extraction rate of organic light emitting diode devices, a reflective surface and a semi-reflective surface are usually formed on the OLED. The reflective surface and the semi-reflective surface form a microcavity. Using this The microcavity effect generated by the microcavity improves the light extraction rate of the OLED, but at this time the light field distribution range of the OLED is narrow, and there is a serious viewing angle problem. [0003] In order to increase the light field distribution range of the OLED and solve the...

Claims

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Application Information

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IPC IPC(8): H01L51/52G02F1/1343
CPCG02F1/1343H10K50/852H10K50/856
Inventor 张粲马新利杨亚锋王灿谭纪风王维高健
Owner BOE TECH GRP CO LTD
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